First Alert Electrochemical Smoke & Carbon Monoxide Detector With Battery Backup

Hard-Wired Power Type: This smoke and carbon monoxide detector is hard-wired, providing continuous power and eliminating the need for battery replacements.
Electrochemical Sensor Technology: Equipped with electrochemical sensing technology, this detector effectively identifies carbon monoxide, ensuring timely alerts to potential dangers.
Ionization Sensor: The ionization sensor detects the fine particles of fast-burning fires, enhancing your safety by providing early warnings.
85-Decibel Alarm: The loud 85-decibel alarm ensures that you will hear the alert, even in noisy environments, giving you ample time to respond.
Test and Reset Button: A convenient test and reset button allows you to easily check the functionality of the detector and silence any nuisance alarms.

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